capinfos - Prints information about binary capture files
capinfos
[ -t ]
[ -c ]
[ -s ]
[ -d ]
[ -u ]
[ -a ]
[ -e ]
[ -y ]
[ -i ]
[ -z ]
[ -h ]
capfile
...
Capinfos is a program that reads one or more saved capture files and
returns any or all of several statistics about each file. Capinfos is
able to detect and read any capture supported by the Ethereal package.
Capinfos can read the following file formats:
There is no need to tell Capinfos what type of
file you are reading; it will determine the file type by itself.
Capinfos is also capable of reading any of these file formats if they
are compressed using gzip. Capinfos recognizes this directly from the
file; the '.gz' extension is not required for this purpose.
The user specifies which statistics to report by specifying flags
corresponding to the statistic. If no flags are specified, Capinfos will
report all statistics available.
- -t
-
Displays the capture type of the capture file.
- -c
-
Counts the number of packets in the capture file.
- -s
-
Displays the size of the file, in bytes. This reports
the size of the capture file itself.
- -d
-
Displays the total length of all packets in the file, in
bytes. This counts the size of the packets as they appeared
in their original form, not as they appear in this file.
For example, if a packet was originally 1514 bytes and only
256 of those bytes were saved to the capture file (if packets
were captured with a snaplen or other slicing option),
Capinfos will consider the packet to have been 1514 bytes.
- -u
-
Displays the capture duration, in seconds. This is the
difference in time between the earliest packet seen and
latest packet seen.
- -a
-
Displays the start time of the capture. Capinfos considers
the earliest timestamp seen to be the start time, so the
first packet in the capture is not necessarily the earliest -
if packets exist ``out-of-order'', time-wise, in the capture,
Capinfos detects this.
- -e
-
Displays the end time of the capture. Capinfos considers
the latest timestamp seen to be the end time, so the
last packet in the capture is not necessarily the latest -
if packets exist ``out-of-order'', time-wise, in the capture,
Capinfos detects this.
- -y
-
Displays the average data rate, in bytes
- -i
-
Displays the average data rate, in bits
- -z
-
displays the average packet size, in bytes
- -h
-
Prints the help listing and exits.
tcpdump(8), pcap(3), ethereal(1), mergecap(1), editcap(1), tethereal(1)
Capinfos is part of the Ethereal distribution. The latest version
of Ethereal can be found at http://www.ethereal.com.
Original Author
-------- ------
Ian Schorr <ian[AT]ianschorr.com>
Contributors
------------
Gerald Combs <gerald[AT]ethereal.com>